LG PAHCMW000 Installation Manual Download Page 5 | Manualshive

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INSTALLATION SCENE

5

ENGLISH

INSTALLATION SCENE

Schematic Diagram

This module is intended to connect 3rd party plate heat exchanger to LG outdoor unit with the
ability to control water temperature from 3rd party DDC or LG remote controller.

h

FS : Flow Switch

h

TT : DHW Temperature Transmitter

NOTE

• Installation scene shows a general installation.

• Some items are field supply.

• Installation scene may vary on application.

• Heating wired remote controller is sold separately.

M

FS

TT

3rd Party DDC

Modbus RTU / DI+AI

Refrigerant Side

Water Side

DHW

Tank

Water

Communication

Module

LG

Remote

Controller

Heat

Exchanger

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Summary of Contents for PAHCMW000

Page 1: ...won si Gyeongsangnam do KOREA www lg com Copyright 2019 LG Electronics Inc All Rights Reserved Please read this installation manual completely before installing the product Installation work must be performed in accordance with the national wiring standards by authorized personnel only Please retain this installation manual for future reference after reading it thoroughly WATER COMMUNICATION MODUL...

Page 2: ...t the service center or a professional installation agency Otherwise it may cause fire electrical shock explosion or injury Securely attach the electrical part cover to Comm Module If the electric part cover of Comm Module is not attached securely it could result in a fire or electric shock due to dust water etc Always install an air leakage breaker and a dedicated switching board No installation ...

Page 3: ...se it may cause electrical shock or a fire Keep flames away Otherwise may occur a fire Take the power plug out if necessary holding the head of the plug and do not touch it with wet hands Otherwise it may cause a fire or electrical shock Do not use the power cord near the heating tools Otherwise it may cause a fire and electrical shock Do not allow water to run into electrical parts Otherwise it m...

Page 4: ...he ocean Where Sulphur gas is present such as that in areas of hot spring In vehicles or vessels Where voltage fluctuates a lot such as that in factories Where high concentration of vapor spray are present Where machines generating electromagnetic waves are present Where acidic or alkaline vapor is present The option boxes must be installed with entrances downward 4 BEFORE INSTALLATION ENGLISH ...

Page 5: ... 3rd party DDC or LG remote controller h FS Flow Switch h TT DHW Temperature Transmitter NOTE Installation scene shows a general installation Some items are field supply Installation scene may vary on application Heating wired remote controller is sold separately M FS TT 3rd Party DDC Modbus RTU DI AI Refrigerant Side Water Side DHW Tank Water Communication Module LG Remote Controller Heat Exchang...

Page 6: ...requires DC12 V external power supply Select an insulating transformer that complies with IEC61558 2 6 and NEC Class 2 Please check the Product operation range below The Ingress Protection marking for this product restricts installation location LG Electronics is not responsible for installation at locations non compliant to the IP rating Power Supply 12 V DC Product Operation Range Ambient Temper...

Page 7: ...ERSAL INPUT DHW Only UI1 Flow Switch Flow Switch Input by 3rd party UI2 0 10V Set Temp Target Temp Setting UI3 DHW Temperature Transmitter 0 10V Measured Water Temp Input by 3rd party 0 10 V sensor UI4 DHW Thermostat Signal DHW Heating Signal NTC RI1 Water Inlet Sensor PHEX Water Inlet Sensor RI2 Water Outlet Sensor PHEX Water Outlet Sensor REMO 12V SIG GND LG Remote Controller SINGLE Reserved DIG...

Page 8: ...or Function Detailed actions for the DIP switch value are shown below S W name No Item Setting Note SW 1 1 ODU 1 2 3 4 ON On Reserved 1 2 3 4 ON Off Using Multi V outdoor unit 2 Control type 1 2 3 4 ON On LG Wired remote controller Modbus RTU by 3rd party DDC 1 2 3 4 ON Off Digital Analogue Inputs 3 4 Reserved SW 2 Reserved ...

Page 9: ...e No Item Setting Note SW 3 1 Master Slave 1 2 3 4 ON On Reserved 1 2 3 4 ON Off Master 2 3 Operation Mode Setup 1 2 3 4 ON Off Off Heat Pump 1 2 3 4 ON Off On Reserved 1 2 3 4 ON On Off Reserved 1 2 3 4 ON On On DHW Only 4 Reserved ...

Page 10: ...W 21 54 15 8 21 76 22 4 21 96 28 0 21 115 33 6 21 134 39 2 21 153 44 8 21 172 50 4 21 192 56 0 h It s needed to match indoor unit s capacity with outdoor unit by DIP switch setting h Select the biggest available capacity 192 kBtu h index when EEV DX Coil capacity is bigger than 192 kBtu h or 56 kW h After setting DIP switch power reset is needed or push the reset button ...

Page 11: ...works must be conform to local codes Use copper wire only All wiring must be performed by an authorized electrician A main switch or other means for disconnection having a contact separation in all poles must be incorporated in the fixed wiring in accordance to relevant local and national regulations Refer to the installation manual attached to the outdoor unit for the size of power supply electri...

Page 12: ...ger 3 Water In Install the thermistor at the water inlet of the heat exchanger as close as possible to the heat exchanger 4 Water Out Install the thermistor at the water outlet of the heat exchanger as close as possible to the heat exchanger Evaluation must be done to check if the evaporator is protected against freeze up Execute test operation and check for freeze up 1 Pipe In Suction Pipe 2 Pipe...

Page 13: ...wn of the thermistor For sensing the evaporator s temp in thermistor Put the upper port of the thermistors on the evaporator this is the most sensitive point of the thermistor Fasten the sensor using the supplied sensor holder and clip Insulate ther thermistor with insulation material Over 5mm thick field supply 45 Water ...

Page 14: ...olenoid Valve NC Field supplement 5 Non Return Valve Field Supplement M 2 1 5 4 3 Refrigerant Side Water Side Capacity kW EEV Type System Compatibility Kv Value of Solenoid and Non Return Valve Pipe size for bypass Min Max 3 6 28 PAEEVC000 HP HR 0 95 3 8 9 52mm PRLK048A0 28 56 PRLK096A0 HP 1 90 1 2 12 7mm NOTE The solenoid valve must be a normally closed type NC The non return valve must be a type...

Page 15: ...ould be available when pump output but is closed The nominal flow and cut of flow can be calculated using the values below Example ODU Nominal Cooling Capacity 28 kW 28 3 29 92 12 L min nominal flow 28 1 23 34 44 L min flow switch cut off FS Refrigerant Side Water Side Water Communication Module Nominal Flow Flow switch Cut Off L min kW 3 29 1 23 Heat Exchanger ...

Page 16: ... 10 V Set Temp 2 V 5 C 10 V 65 C UI3 DHW Temperature Transmitter 0 V 0 C 10 V 100 C UI4 DHW Thermostat Signal UI4 Open DHW Heating OFF UI4 Closed DHW Heating ON DIGITAL OUTPUT DO1 Defrost Mode DO1 OFF Heating Mode DHW only mode DO1 ON Defrost Active Cooling Heating Mode DO1 ON Defrost Active or Cool Mode Active DO2 Pump DO2 OFF Pump OFF DO2 ON Pump ON DO3 Bypass DO3 OFF Bypass valve OFF DO3 ON Byp...

Page 17: ... 9600Bps Parity None Parity 1 Stop Bit Frame Length 8 Bit The Modbus RTU slave address can be set up with wired remote controller Setting 3 seconds push Input passcode sw version Installer Menu Central Controller Address HEX Applied Function Code NOTE The input range has a linear output between min and max value Function Code Sub Function Function Name Start Address form Master Device 0x01 None Re...

Page 18: ...active 9 0x0008 8 10009 Cooling status 1 0 0 No cooling 1 Cooling operation 14 0x000D 13 10014 Error status 1 0 0 No error 1 Error state Input Register No Address Register Description Range Value explanation HEX DEC High Low 1 0x0000 0 30001 Error code 0xFFFF 0x0000 Error code 2 0x0001 1 30002 ODU operation cycle 0xFFFF 0x0000 0 Standby OFF 1 Cooling 2 Heating 3 0x0002 2 30003 Water inlet temp 0xF...

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